Use the Information Provided to Determine ΔH°_rxn for the Following

question 68

Multiple Choice

Use the information provided to determine ΔH°_rxn for the following reaction: ΔH°_f (kJ/mol) CH₄(g) + 3 Cl₂(g) → CHCl₃(l) + 3 HCl(g) ΔH°_rxn = ?
CH₄(g) -75
CHCl₃(l) -134
HCl(g) -92

• A) -151 kJ
• B) -335 kJ
• C) +662 kJ
• D) +117 kJ
• E) -217 kJ

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Definitions:

Self-Incompatibility

A mechanism in plants that prevents self-fertilization and encourages cross-pollination by rejecting pollen from the same or genetically similar individuals.

Hermaphroditic

Describes an organism that possesses both male and female reproductive organs, allowing it to perform both roles in reproduction.

Allele Frequency

The proportion of all copies of a particular gene in a population that are of a given allele type, influencing genetic diversity and evolution.

Hardy-Weinberg Theorem

A principle that states allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.